The site policy is that discussions of cheating, potential cheating, or cheat detection are not allowed in the general forums. There is a club where that discussion is allowed.
As to playing premium only in live, it's been a requested feature for a long time but my guess is it's unlikely to ever be implemented. The site does attempt to pair premium members initially but if a compatible pairing isn't found quickly it switches to the general pool.
Every time I make a new topic on cheating, the management comes in and locks the thread, by posting how they ban x amount users, and that I should just report them. Ask yourself, why?
I have blocked litererally thousands of users in my last ten years. And yet, when I am looking for a game with someone in withing +/- points of my rating, I get instantly matched.
THERE AREN'T THIS MANY PLAYERS IN THE ENTIR WORLD, let alone Chess.com, in the 2200 range! If I went to the World Open, you might find 200 of them there. Here, there are hundreds of thousands of them!
I told the guy, I DON'T WANT TO BE MATCHED with non-premium members. ZERO RESPONSE, except that I have played a few of them. Look at my games history. It is like 1 every 50!
Every other site would implement the feature so that the user has the choice of who he plays. Not here. Ask yourself, why?
This site is 90% bots